Foot-operated valve.



V. D. RENWIOK, JR. FOOT OPER APPLICATION FILED N0v.4,1912.

ATED VALVE.

Patented Aug. 26, 1913.

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w a MM M y w y m T@ m w WITNESSES V. D. RENWIGK, JR. FOOT OPBRATED VALVE.

APPLICATION FILED NOV.4,1912.

Patented Allg. 26, 1913.

s SHBBTS-SHEBT s.

FOOT-OPERATED VALVE.

Specification of Letters Patent.

Patented dug.. 26,191.3.

Application filed November 4, 1912. Serial No. 729,425.

To all whom, t may concern .Be it known that I, Vieron D. Riinwicit, Jr., a citizen of the United States, residing at Merchantville, in the connty of Camden d and Stateof New Jersey, have invented eertain new and usefull Improvements in Foot- ()perated Valves, of which the following is a specification. A

rlhis invention relates to improvements in foot operated valves.

The primary objectl of the invention is the provision of elements designed to render the assembling and dis-assembling of a foot operated valve an easy and rapid operation,

including the seating of the spring actuator.

A foot operated valve iscovered by my Letters Patent #1,004,467, dated September 26,1911, and the present invention differs from the same in the specific formation d@ of certain of the elements and in the man ner o f dis-assemblin the, parts, While it resembles the same in ld'eing foot operated and of the general type known as push button valves. During the service and use of these valves, it is advantageous to provide a 'ready and easy means whereby the washer and packing carrying parts are readily accessible for the purpose of renewing the wearing elements, and 1 now provide coinilete valve mechanisms adapted to be readily inserted and Withdrawn froma primary valve body or casing. This provision also includes means for forcing the valve plug from a tapered bore of the easing upon a movement effecting a withdrawal of the general valve elements. '.lhere is Yfurther provided a serviceable closedl form ot valve casing having a drainage. outlet leading therefrom for exhausting any fluid accumulatiiig around the valve operating mechanism during the operation thereof.

More specific objects of the invention are the provision of a locking means between the steni head and a plug sleeve whereby a forced rotation of the former results in lift ing said plug sleeve from the casing.

With these main objects in view and others that will appear as the nature `of the invention is better understood, the same 0 consists in the novel combination and arn rangement of parts hereinafter fully `described, illustrated 1n the accompanying drawings, and pointed out in the appended claims.

ln the drawings forming a part ottliis application and 1n which like `numerals of reference designate corresponding parts throughout the several Views:-l4`igure 1 is a central' vertical longitudinal sectional view of the device. Fig..2 is a top plan view thereof. Figs. 8, 1, and 5 are horizontal transverse sectional views taken respectively upon lines 33, 4%, and of Fig. 1. Fig. (S is a side elevation of the device upon a reduced scale. Fig. 7 is a related view of a port-ion of the stein with the head, the sleeve and the locking carrier therefor. Fig. 8 is a detail view of the engagement between the head and sleeve. Fig. 9 is a perspective View of the locking carrier inverted, and, Fig. 10 is a sectional detail view of a form of coupling for the inlet and outlet.

Referring more in detail to the drawings, a closed substantially tubular valve casing or body 15v is eniployedliaving at its, lower end inlet. and outlet ports 1G and 17 respectively, the latter being of substantially the ordinary construction. Said casing is pro vided vwith the top annular flange 18 adapted to receive the casing within an opening of the floor 19 with said lianges seated thereon or in a inortise therein and secured by holdfast devices Q0' if desired. Within the lower part of the easing 15 and including that portion between the inlet and outlet. thereof,

`the inner facing of the casing as at 2l is downwardly vtapered for the reception of a correspondingly tapered valve plug 2Q which is inserted therein from the open top of the casing. Said plugbeing provided with a central bore 28, slidably receives the reciprocatory valve stem 24, which at its lower end has the, annulaipiston .25 working in the enlarged portion 2G of said bore. Said valve stein at its lower end being provided with a screw-threaded bore is adapted to receive the screw 27 of the cup washer 28, the latter adapted to receive and position the bib washer 2). The plug is iiori'nally positioned above the bottom 3() of the valve casing providing the water chamber 31 in the bottom thereof and within the upper portion of which the recessed end 39. of the valve plug extends, the cup washer and bib washer on the lower end of the valve stem being therein reciprocated upon an operation of' the valve for seating and unseatiiig said washer from contact with the annular flange 33A at the. lower periphery of the enlarged bore. 26.

rlhe plug 22 upon a plane normally in alinelnent with the inlet 16 is provided wit-li 'Y the annular recess 34 and from which at four diametrically opposed points inlet ports 35 communicate with the enlarged central bore 26. Corresponding with the normal position of said recess 34, the valve casing is provided with a coperating annular recess 36 and by which construction, it will be at once evident that the entrance of a fluid through the nipple 16 fills the annular recesses 34 and 36 and from whence the fluid passes through the ports 35, into the recess 26 and thence to the bottom chamber 31 under control of the valve stern washer 29 and from whence it leaves the casing through the outlet nipple 17. The valve plug is further provided with an inclined external annular shoulder 37 and upon which is seatedv the plug packing 38 in connection with which a slight enlargement of the casing bore at 39 may be provided if desired. Seated around said valve plug and positioned upon the plug packing and adapted for retaining the latter in closed contact with the plug and thereby firmly positioning the plug within the casing, is the tubular plug sleeve 40 provided with side cutaway portions 41 and being externally screwthreaded at the collared top 42 thereof for engagement with the internally screwthreaded portion 43 at the upper end of the v alve casing. It is apparent, that as the lower annular collar 45 of said plug sleeve removably iits the slightlycontracted bore 46 of the casing, that said contact-ing elements may be screw-threaded at these points if desired, so that the plug sleeve may have a screw-threaded engagement with the casing at either or both the topA and bottom thereof.

The plug sleeve, as will he evident, is removable from the casing by unscrewing the screw-threaded engagement therewith and for the purpose of connecting said sleeve with the valve plug so that the latter may be simultaneously acted upon, a jack washer 47 is adapted to be positioned around the contracted shoulder 48 of the plug by inserting the same through the interrupted portion 49 of the plug sleeve and seated upon the bottom collar 45, all of which is made possible by the interrupted side 50 of said washer, as best shown in Fig. 5.

The stem packing cap 51 is seated upon the top of the plug and by reason of the convexity of its top forms with the inwardly inclined top 52 of the plug, a packing chamber adapted to receive a packing 53 which i may consist of asbestos saturated with vaseline. The bottom annular iiange 54 of the packing cap seats thereon' a helical spring 55 encircling the stem and normally main-l tained partly/compressed by the stem head 56 retained thereon by the head screw 57.

The present manner of securing the head upon the stem by means of the screw 57 and a .platey or carrier 58 and the locking of the head thereby with the plug sleeve to insu-re a rotation in unison of said sleeve vand head,v

form a material part of the invention. The carrier being provided with the circularperforation 59 adjacent one end thereof communicates with a central longitudinal slot 60 positioned centrally of the carrier and having a. circular counter-sunk portion 61 adjacent the said slot and of the same diameter as the stem. The stem is placed through the perforation 59 of the carrier and is slid therealong until the flattened portion 62 is reached upon the stem, whereupon said iiattened portion is moved into the slot 60 at which time the countersunk socket V61 will rest upon the lower shoulder formed upon the stem and by tightening the screw 57, it will be evident that all of the elements will be firmly locked together and that the outer ends 63 of the carrier will project from the.

head, sui'icient in length to be slidably received within the slots 8O of the sleeve, through the cut-out portions 64 of the depending fiange 65 of the head, which head and flange areslidably fitted within the internal smooth bore of the plug sleeve 40.

The portions of the, device exposed to view when in operation and included in the showing of Fig. 2 consist of a foot plate or push button member 66 adapted to have inscribed thereon aproper designation for the iiuid adapted to be controlled by the valve, such as, the letter H denoting that the valve is employed for hot water and that a pressure vexerted upon the plate will cause a flow of the same. A licor plate 67 adapted to encircle the foot plate which latter is slidable therein is received in the open upper end of the valve casing, and the same is preferably only retained therein by a Close frictional contact. F or preventing the relative turning of the foot plate 66, the same is provided with a radially-extending rib 68 slidably received in thc inner slot 69 of the Hoor plate and positioned a short distance beneath the upper surface thereof` In the general description of the present device, the assembling of the head upon the stem and positioned within the sleeve has been set forth as well as the locking of theV sleeve to the valve plug byvmeans of the jack washer and the positioning of the plug within the tapered bore of the casing. The

vfunction of the spring 35 compressed between the head and packing cap has also Abeen set forth in connection with the packing 53 and also the positioning of the sleeve upon the plug packing 3S so that the assembling of the entire elements will be at once apparent and including the positioning of the foot and floor plates.

The general operation of the device is similar to that of other foot operated valves in that a press-ure of the foot plate ($6 forces dll till

i lili the valve upon its seat.

:ternana downwardly the valve stem and its packing 29 to unseat the valve; this admits fluid through the inlet during` the forced compression of the expansion spring 55, which latter returns the valve to a normally closed seated position upon releasing the pressure upon the :toot plate. Such novelty is believed to reside in the adaptation ot' the plug sleeve to he unscrewed from the casing bye turning;r of the head 5G through the agency oit a Wrench eirerd upon the squared Wrench-hold top surface 7G thereohthe turningr or' said head conunpnicatingr a similar rotation to the sleeve through the agency of the carrier 58 engaging in the end slots S0., Such an upward movement of the oarrier contacts its lower collar d5 with the jack Washer 47 which by its emraiement with the plug raises the latter simultaneously with said collar so that by unscrewing the collar through'the agency or the squared portion of the head, the entire mechanisms within the casing are at once removable tor the purpose of repairing the same or renewing the paekings and Washers, it of course beine; noted that the door and tootplates are readily removed and replaced.

lt is evident that while i have described the tluid flow from the nipple 1G to the opposite nipple ll, the duid dow may be reversed in direction if desired. rllhe preferred manner oi operation providing an admission of the duid through the nipple 1G is opposite to the ordinary operation oit' valves, in that the pressure oLl' the flow is e3;-

erted in a direction to open the valve and is against the action of the spring 55. ln the usual construction of valve members, such an operation would be inadvisahle as tendinnr to place the valve closing member under a constant strain and effecting' a leakage ot the valve. 'ilhe present use of the cup washer and bib packing therein., as valve closing members however, furnishes a structure in which this preferred operation is possible Without any liability of causing leakage. Among' the advantages of 4providinen the fluid iiow in this direction is the prevention of any so-called Water hammering, all ot which is obviated by the water under pressure within the bore 2Q forming' hydraulic cushion for the closing valve member, .thus preventing' any sudden closure thereoll and insuringf a gradual closing ot' The last described operation forn'xing'one of the advantages oli the invention, it is noted that a 'further important advantage liesM in an elimination of the awkwardness of assemblingr the spring; member within the mechanism. 'l`he spring' being placed over the stem Q-l and seated upon the cap flange .'34, the head 5G is placed upon the spindle upon said springr and is drawn down to the normal assembled position by seating the screw 5T in its piave,

which compresses the spring,f 55 and retains the same under such normaleompression. rllie dual 'function of the sprinfr presents a structure in which the same Acombines to maintain the packiner cap 5d normally seated and at the same time maintaining the valve in a normally closed position.

For draining the easing, opposite ports 72 are positioned therethrough substantially at equi-distant points upon the casinar between the inlet and outlet ports. @ne of said drain ports is adapted to remain open while the other is preferably closed b v a suitable plug4 73 as shown in Fig. 5.

ln connection with the carrier 58, it should be noted that the ends (33 thereoli may be narrowed to a less breadth than that of the carrier and adapted to slide in narrow top slots or the collar.

ln Fig. 1G, a union connection is illustrated which may b-e employed in connection with the inlet and outlet ports When advantapgeous.' ln this structure., the nippleilt having; a tapered seat 8l is adapted to seat the head 83 olf the service pipe 82 thereagainst by means of the internally threaded compression nut 8l screwed upon the nipple.

Having thus fully described my invention and in what manner the same is designed for use, what l claim as new and desire to secure by Letters Patent is l. l valve comprising a casing', a plug positioned therein havingl an annular socket, a valve removing member Within said casing, and means for locking said plug to said member engaging said socket.

2. It valve comprising a tubular easing, a sleevoremoving means screw-threaded therein, a valve plug', mea-ns for locking said plugn and sleeve, a head litting said sleeve and adapted for longitudinal movement therein, means lor lockingF said head and sleeve against relative rotation, a cap encircling said plug, packing positioned between said cap and plug, and resilient means between said cap and head.

3. ln a valve, a valve stem having opposite shoulders thereon, a head having a ccntral bore and positioned upon said stem, said head having a transverse slot upon the bottom thereof intersecting said bore, and locking,r means positioned in Said slot and engaging said stem shoulders.

dat valve comprising a stem having opposite shoulders, a head having` a central bore for receiving said stem, a transverse slot upon the bottom of said head intersecting said boro, a carrier havinifjr an opening and a slot therethrough and adapted to be received upon said stem and engaging said shoulders thereon.

5. ln a valve, a tubular casing havingI drip openings therethrough, and a tapered seat, a plup,r positioned upon said seat and having l'luid openings therethrough and a titi reo

central bore therein, a stem, extending through said bore, a Valve washer uponthe end of said stem adapted to seat upon said plug, a removing sleeve positioned inv said casing, and means for locking said sleeve and plug.

6. In a valve, a tubular casing having drip openings therethrough, and a tapered seat, a plug positioned upon said seat and having fluid openings therethrough and a central bore therein, a stem extending through said bore, a valve washer upon the end of said stem adapted to sea-t upon said plug, a removing sleeve positioned in said casing, means for locking said sleeve and plug, a head mounted upon said stem, and means for locking said stem and sleeve against relative rotation, said head being slidably-positioned within said sleeve.

7. In a valve, a tubular casing having -drip openings therethrough,- and a tapered seat, a plug positioned upon said seat and having iuid openings therethrough and a central bore therein, a vStem extending ,i

through said bore, a valve washer upon theV casing, meansv for locking said sleeve .and

plug, a head mounted upon said stem, means for locking said stem and sleeve a ainst relative rotation, said head being sli ablypositioned within said sleeve, a cap upon said plug, packing between said cap and plug, a helical spring between said cap and head, and a foot plate mounted upon sald head.

In testimony whereof I aiiix my signature in presence of two witnesses.

VICTOR D. RENWICK, JR. Witnesses:

ARTHUR E. CRAIG, WM. O. CAVE'IS. 

